Pemetrexed Disodium (CAS 357166-30-4): A Comprehensive Overview
Pemetrexed Disodium, with the CAS number 357166-30-4, is a significant pharmaceutical compound that has gained prominence in the medical field. This article aims to provide a detailed introduction to Pemetrexed Disodium, covering its properties, uses, applications in various fields, and preparation methods.
Product Introduction
Pemetrexed Disodium is a multi-targeted antifolate agent. It is a white to off – white powder that is soluble in water. The chemical formula of Pemetrexed Disodium is C₂₀H₁₉N₅Na₂O₆. Its molecular weight is approximately 471.37 g/mol. The compound is an important drug in the treatment of certain types of cancers and has unique pharmacological properties.
Properties of Pemetrexed Disodium
Physical Properties
As mentioned earlier, Pemetrexed Disodium appears as a white to off – white powder. It has a high solubility in water, which is crucial for its formulation into injectable solutions for medical use. The compound has a melting point and other physical characteristics that are carefully studied to ensure its stability and effectiveness during storage and administration. Its stability is also affected by factors such as temperature, humidity, and light. Under normal storage conditions, it should be kept in a cool, dry place away from direct sunlight to maintain its quality.
Chemical Properties
Chemically, Pemetrexed Disodium acts as an inhibitor of several enzymes involved in folate metabolism. It binds to and inhibits thymidylate synthase (TS), dihydrofolate reductase (DHFR), and glycinamide ribonucleotide formyltransferase (GARFT). These enzymes are essential for DNA synthesis, repair, and cell replication. By inhibiting these enzymes, Pemetrexed Disodium disrupts the normal metabolic processes of cancer cells, leading to their death. The chemical structure of Pemetrexed Disodium allows it to interact specifically with the active sites of these enzymes, making it a potent and selective therapeutic agent.
Uses of Pemetrexed Disodium
Medical Use
The primary use of Pemetrexed Disodium is in the treatment of cancer. It is approved for the treatment of malignant pleural mesothelioma in combination with cisplatin and for the maintenance treatment of locally advanced or metastatic non – small cell lung cancer (NSCLC). In the case of malignant pleural mesothelioma, which is a rare and aggressive cancer caused by asbestos exposure, Pemetrexed Disodium has shown significant efficacy in improving patient survival and quality of life. For NSCLC, it can be used as a single agent or in combination with other chemotherapy drugs. It helps to slow down the growth and spread of cancer cells, reduce tumor size, and relieve symptoms such as pain, shortness of breath, and coughing.
Research Use
Pemetrexed Disodium is also widely used in cancer research. Scientists use it to study the mechanisms of folate metabolism in cancer cells, to develop new treatment strategies, and to screen for potential drug candidates. It serves as a valuable tool for understanding the biological processes involved in cancer development and progression. By using Pemetrexed Disodium in in vitro and in vivo experiments, researchers can gain insights into the role of folate – dependent enzymes in cancer cell survival and proliferation, and explore ways to overcome drug resistance.
Applications in Various Fields
Clinical Oncology
In clinical oncology, Pemetrexed Disodium has become an important part of the treatment regimen for many cancer patients. Oncologists carefully select patients who are most likely to benefit from this drug based on factors such as the type and stage of cancer, the patient’s overall health, and genetic markers. The drug is usually administered intravenously on a regular schedule, and patients are closely monitored for side effects and treatment response. Common side effects of Pemetrexed Disodium include fatigue, nausea, vomiting, diarrhea, and decreased blood cell counts. However, these side effects can often be managed with supportive care measures.
Pharmaceutical Industry
In the pharmaceutical industry, Pemetrexed Disodium is manufactured and formulated into various dosage forms. Pharmaceutical companies invest a significant amount of resources in the research, development, and production of this drug. They ensure strict quality control measures to guarantee the safety and efficacy of the product. The formulation of Pemetrexed Disodium requires specialized knowledge and technology to ensure its stability and proper delivery to the target cells. Additionally, the industry is constantly exploring ways to improve the drug’s properties, such as developing new formulations with better bioavailability and fewer side effects.
Biomedical Research
In biomedical research, Pemetrexed Disodium is used in a wide range of studies. It is used to investigate the molecular mechanisms of cancer, to develop new diagnostic tools, and to test the effectiveness of novel therapeutic approaches. For example, researchers may use Pemetrexed Disodium in combination with other drugs or targeted therapies to study synergistic effects and overcome drug resistance. It also plays a role in studying the role of folate metabolism in other diseases, not just cancer, such as neurodegenerative disorders and cardiovascular diseases.
Preparation Methods of Pemetrexed Disodium
General Synthetic Route
The synthesis of Pemetrexed Disodium involves a series of chemical reactions. The starting materials are carefully selected based on their availability and reactivity. One common approach starts with the synthesis of a key intermediate, which is then further modified to obtain the final product. The synthesis typically involves steps such as condensation reactions, protection and deprotection of functional groups, and salt formation. For example, the condensation of appropriate aromatic and heterocyclic compounds is carried out under specific reaction conditions to form the core structure of Pemetrexed. After that, functional groups are added or modified to achieve the desired biological activity. Finally, the disodium salt is formed by reacting the free acid with sodium hydroxide or other suitable sodium – containing reagents.
Optimization of Synthesis
To improve the yield and purity of Pemetrexed Disodium, chemists often optimize the synthesis process. This may involve adjusting reaction conditions such as temperature, pressure, reaction time, and the choice of solvents and catalysts. They also use advanced separation and purification techniques, such as chromatography and recrystallization, to isolate the pure product. Additionally, quality control measures are implemented at each step of the synthesis to ensure that the final product meets the required standards for medical use.
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